/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #0a0a0a;
    --bg-card: #111111;
    --bg-card-hover: #1a1a1a;
    --text: #ededed;
    --text-muted: #888888;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --border: #222222;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ===== Layout ===== */
.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Nav ===== */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
    color: var(--text);
}

.nav-links {
    display: flex;
    gap: 24px;
    font-size: 0.9rem;
}

.nav-links a {
    color: var(--text-muted);
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--text);
}

.nav-blog {
    color: var(--accent) !important;
}

.nav-blog:hover {
    color: var(--accent-hover) !important;
}

/* ===== Hero ===== */
.hero {
    padding: 80px 0 60px;
}

.greeting {
    font-size: 1rem;
    color: var(--accent);
    margin-bottom: 8px;
    font-weight: 500;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 16px;
}

.tagline {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.intro {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 540px;
    line-height: 1.8;
    margin-bottom: 32px;
}

.hero-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 10px 22px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-muted);
    border-color: var(--border);
}

.btn-secondary:hover {
    color: var(--text);
    border-color: var(--text-muted);
    transform: translateY(-1px);
}

/* ===== Sections ===== */
.section {
    padding: 60px 0;
    border-top: 1px solid var(--border);
}

.section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

/* ===== About ===== */
.about-content p {
    color: var(--text-muted);
    margin-bottom: 16px;
    font-size: 1.05rem;
}

/* ===== Projects ===== */
.projects-grid {
    display: grid;
    gap: 16px;
}

.project-card {
    display: block;
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: all 0.2s;
}

.project-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--text-muted);
    transform: translateY(-2px);
}

.project-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.project-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.project-tech {
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 500;
}

/* ===== Contact ===== */
.contact-text {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 24px;
    max-width: 480px;
}

/* ===== Footer ===== */
footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    text-align: center;
}

footer p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

footer a {
    color: var(--text-muted);
    transition: color 0.2s;
}

footer a:hover {
    color: var(--text);
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
    .container {
        padding: 0 16px;
    }

    nav {
        padding: 16px 0;
    }

    .nav-links {
        gap: 16px;
        font-size: 0.85rem;
    }

    .hero {
        padding: 48px 0 40px;
    }

    .section {
        padding: 40px 0;
    }

    .hero-links {
        flex-direction: column;
        gap: 10px;
    }

    .hero-links .btn {
        text-align: center;
    }
}

/* ===== Fade-in animation ===== */
.fade-in {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}